We were driving around and looking at Christmas lights, but Sam was being a bit Scroogish and just wanted to go home.
Me: "We can't go home, Sam! We're having a Merry Christmas time!"
Sam: [disdainful voice] "Not every day is a Merry Christmas day, Mommy."
Me: "Really? When *is* it a Merry Christmas day, then?"
Sam: "It's only Christmastime when the Cartoon Network says it is, Mommy."